I am using 10.04. I thought my mouse had died, so I went and bought another one, That didn't work either, so I tried them on another machine (Windows) and they worked fine, so I assumed my PS2 port died. (keyboard is also PS2 and it works fine). No problem, I bought a PS2 to USB adapter, Still not working...
Right now, I'm using a wireless mouse, but I really don't like it. I want to use my other mice. Can someone help me?

lsmod | grep psmouse? – Jeremy Kerr Jul 29 '11 at 5:23